GBX vs WAB vs TT vs TRN

For growth investors, Westinghouse Air Brake Technologies Corporation (WAB) is the stronger pick with 7.

5% revenue growth year-over-year, versus -30. 0% for Trinity Industries, Inc. (TRN). The Greenbrier Companies, Inc. (GBX) offers the better valuation at 7. 9x trailing P/E (16. 0x forward), making it the more compelling value choice. Analysts rate The Greenbrier Companies, Inc. (GBX) a "Buy" — based on 24 analyst ratings — the highest consensus in this comparison. The "better buy" depends entirely on your goals: growth investors should weight revenue trajectory, value investors should weight P/E and PEG, and income investors should weight dividend yield and streak.

On trailing P/E, The Greenbrier Companies, Inc.

(GBX) is the cheapest at 7. 9x versus Westinghouse Air Brake Technologies Corporation at 38. 9x. On forward P/E, The Greenbrier Companies, Inc. is actually cheaper at 16. 0x. The PEG ratio (P/E divided by earnings growth rate) is the most growth-adjusted single valuation metric: The Greenbrier Companies, Inc. wins at 0. 47x versus Trane Technologies plc's 1. 06x — a PEG below 1. 0 traditionally signals the market is underpricing earnings growth.

Over the past 5 years, Westinghouse Air Brake Technologies Corporation (WAB) delivered a total return of +229.

0%, compared to +14. 7% for The Greenbrier Companies, Inc. (GBX). Over 10 years, the gap is even starker: TT returned +874. 8% versus GBX's +130. 7%. Past returns do not guarantee future results, and the stock with the higher historical return may already have its best growth priced in.

By beta (market sensitivity over 5 years), The Greenbrier Companies, Inc.

(GBX) is the lower-risk stock at 0. 97β versus Westinghouse Air Brake Technologies Corporation's 1. 11β — meaning WAB is approximately 15% more volatile than GBX relative to the S&P 500. On balance sheet safety, Westinghouse Air Brake Technologies Corporation (WAB) carries a lower debt/equity ratio of 50% versus 5% for Trinity Industries, Inc. — giving it more financial flexibility in a downturn.

By revenue growth (latest reported year), Westinghouse Air Brake Technologies Corporation (WAB) is pulling ahead at 7.

5% versus -30. 0% for Trinity Industries, Inc. (TRN). On earnings-per-share growth, the picture is similar: Trinity Industries, Inc. grew EPS 86. 0% year-over-year, compared to 13. 1% for Westinghouse Air Brake Technologies Corporation. Over a 3-year CAGR, WAB leads at 10. 1% annualised revenue growth. Higher growth typically commands a higher valuation multiple — check whether the premium P/E or P/S is justified by the growth rate using the PEG ratio.

Trane Technologies plc (TT) is the more profitable company, earning 13.

7% net margin versus 6. 3% for The Greenbrier Companies, Inc. — meaning it keeps 13. 7% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: TT leads at 18. 6% versus 10. 4% for GBX. At the gross margin level — before operating expenses — TT leads at 36. 2%, reflecting greater pricing power or product mix advantage. Stronger margins indicate durable pricing power, lower cost of revenue, or higher mix of software/services. They are one of the clearest signs of business quality.

The PEG ratio (forward P/E divided by expected earnings growth rate) is the most precise measure of undervaluation relative to growth potential.

By this metric, The Greenbrier Companies, Inc. (GBX) is the more undervalued stock at a PEG of 0. 47x versus Trane Technologies plc's 1. 06x. A PEG below 1. 0 is traditionally considered the threshold for growth-adjusted undervaluation. On forward earnings alone, The Greenbrier Companies, Inc. (GBX) trades at 16. 0x forward P/E versus 31. 7x for Trane Technologies plc — 15. 7x cheaper on a one-year earnings basis. Analyst consensus price targets imply the most upside for TT: 10. 4% to $518. 50.

All stocks in this comparison pay dividends.

Trinity Industries, Inc. (TRN) offers the highest yield at 3. 2%, versus 0. 4% for Westinghouse Air Brake Technologies Corporation (WAB).

For long-horizon retirement investors, Trane Technologies plc (TT) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (low volatility (β 0.

97), 0. 8% yield, +874. 8% 10Y return). Both have compounded well over 10 years (TT: +874. 8%, WAB: +247. 1%), confirming both are viable long-term holds — but the lower-volatility option typically results in less emotional selling during corrections. Retirement portfolios generally favour predictability over maximum returns. Consult a financial advisor before making allocation decisions.

Both stocks operate in the Industrials sector, making this a peer-level intra-sector comparison — the same macro tailwinds and headwinds will affect both.

In terms of investment character: GBX is a small-cap deep-value stock; WAB is a mid-cap quality compounder stock; TT is a mid-cap quality compounder stock; TRN is a small-cap deep-value stock. GBX, TT, TRN pay a dividend while WAB does not, making them suitable for different income and tax situations. These fundamental differences mean investors should not choose between them on a single metric — the "better stock" depends entirely on which of these characteristics aligns with your investment strategy.